Static web page/us63/conditional main page

[yeudit]

Checklist:

• I have included a meaningful summary of my PR's content
• If applicable, I have included screenshots to help describe my change
• I have linked my PR to the relevant issue
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes do not generate new compliance warnings / errors
• I have tested that my fix or enhancement is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have made corresponding changes to the documentation